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Entry  Wed Apr 4 12:52:33 2018, awade, Summary, Drawings, Drawings: 2in windows for vacuum can flang and clamp VacuumViewportDesignNotebook.ipynb.zipTwoViewPort_10inchBlankFlange_Modified_v1.PDFTwoInchViewportRetainingRing_v1.PDF2inchWindowAssemb_3degangling_0.5degWedge.PDFSolidWorksFiles_NewVacCanFlanges.zip
    Reply  Wed Apr 11 16:06:31 2018, awade, Summary, Drawings, Drawings: 2in windows for vacuum can flang and clamp 2inchWindowAssemb_explodedView_50frameswtblur_medium.gif
       Reply  Fri Apr 13 11:34:09 2018, awade, Summary, Drawings, Drawings: 2in windows for vacuum can flang and clamp, steve's comments 
Message ID: 2168     Entry time: Wed Apr 11 16:06:31 2018     In reply to: 2163     Reply to this: 2171
Author: awade 
Type: Summary 
Category: Drawings 
Subject: Drawings: 2in windows for vacuum can flang and clamp 

Some updates for 2 inch window flanges.

Errors fixed

I noticed a few small errors in the 2 inch window flange design.  I hadn't factored the clearance of the window from the metal (0.5 mm) into the depth of the o-ring grooves, so as to get exactly 0.72 compression when assembled.  Also the clearance on the retaining ring side was wrong because I had computed the angling depth on the lower side of the optic based on the optic dimensions and not on the size of the cut hole with clearance.

To fix these issues and clarify the specified clearance, in the solidworks part itself, I have made the clearance explicit with two additional revolve cuts. One is around the face and around the circumference of the optic. This way the clearance will also be parameterize in the part: this should improve adaptability of the part to other applications. Groove depth is now set at the desired compression ratio and the correct real depth of the final groove is realized by the clearance cuts.

Also I changed the angling of the two windows to point inwards on the outside of the can.  This means that ghost beams will be maximally separated on the inside of the can, making it easier to mount a pair of beam dumps either side of each cavity.

Files uploaded to DCC

I've put the drawings and assembly on DCC for better version tracking. I've attached the solid works folder below in a zip for local reference.

How it fits together

I have yet to finish checking the whole tank assembly.  For now here is a pretty animation showing port and orings.

 

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